From patchwork Fri Mar 4 09:05:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianqun Xu X-Patchwork-Id: 548631 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D726FC433F5 for ; Fri, 4 Mar 2022 09:06:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236686AbiCDJHB (ORCPT ); Fri, 4 Mar 2022 04:07:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236689AbiCDJG2 (ORCPT ); Fri, 4 Mar 2022 04:06:28 -0500 Received: from mail-m17661.qiye.163.com (mail-m17661.qiye.163.com [59.111.176.61]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C0FE18C7AE for ; Fri, 4 Mar 2022 01:05:28 -0800 (PST) Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m17661.qiye.163.com (Hmail) with ESMTPA id 8C1CC1DFEB0; Fri, 4 Mar 2022 17:05:26 +0800 (CST) From: Jianqun Xu To: heiko@sntech.de Cc: linus.walleij@linaro.org, linux-rockchip@lists.infradead.org, linux-gpio@vger.kernel.org, Jianqun Xu Subject: [PATCH 2/3] gpio: rockchip: get pinctrl node from 'gpio-ranges' property Date: Fri, 4 Mar 2022 17:05:22 +0800 Message-Id: <20220304090523.1748297-3-jay.xu@rock-chips.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220304090523.1748297-1-jay.xu@rock-chips.com> References: <20220304090523.1748297-1-jay.xu@rock-chips.com> MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgPGg8OCBgUHx5ZQUlOS1dZCBgUCR5ZQVlLVUtZV1 kWDxoPAgseWUFZKDYvK1lXWShZQUlKS0tKN1dZLVlBSVdZDwkaFQgSH1lBWRpPHxpWHUlIGU4eQh odSU1CVRMBExYaEhckFA4PWVdZFhoPEhUdFFlBWU9LSFVKSktITUpVS1kG X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6MBA6Qzo6Ez5PDT9OFxkdLAss GDowFCtVSlVKTU9NSENPTElNQkpKVTMWGhIXVREaAlUDDjsJFBgQVhgTEgsIVRgUFkVZV1kSC1lB WU5DVUlJVUxVSkpPWVdZCAFZQUlDS083Bg++ X-HM-Tid: 0a7f542d429fda2bkuws8c1cc1dfeb0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The dt nodes for rockchip soc designes as pinctrl: pinctrl { gpio { }; }; Currently, we get the pinctrl dt node from parent of gpio, this patch try to get pinctrl dt node from 'gpio-ranges' property. After this patch, the dt nodes possible to be gpio { gpio-ranges = <&pinctrl xxx>; }; pinctrl: pinctrl { }; then the gpio driver could register as platform device itself, but not populate from pinctrl driver. Signed-off-by: Jianqun Xu --- drivers/gpio/gpio-rockchip.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index 1da0324445cc..46c54dff92db 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -690,6 +690,9 @@ rockchip_gpio_find_bank(struct pinctrl_dev *pctldev, int id) int i, found = 0; info = pinctrl_dev_get_drvdata(pctldev); + if (!info) + return NULL; + bank = info->ctrl->pin_banks; for (i = 0; i < info->ctrl->nr_banks; i++, bank++) { if (bank->bank_num == id) { @@ -705,15 +708,16 @@ static int rockchip_gpio_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; - struct device_node *pctlnp = of_get_parent(np); + struct device_node *pctlnp = NULL; struct pinctrl_dev *pctldev = NULL; struct rockchip_pin_bank *bank = NULL; struct rockchip_pin_output_deferred *cfg; static int gpio; int id, ret; - if (!np || !pctlnp) - return -ENODEV; + pctlnp = of_parse_phandle(np, "gpio-ranges", 0); + if (!pctlnp) + pctlnp = of_get_parent(np); pctldev = of_pinctrl_get(pctlnp); if (!pctldev)